Preparation of Magnetite Nanoparticles Encapsulated with Biodegradable Polymer (PLGA)
2006
Magnetite nanoparticles encapsulated with biodegradable polymer [poly(D,L-lactide-co-glycoiide), PLGA] were prepared by an emulsification-diffusion method. To investigate the effect of type of organic solvents on the mean particle sizes of obtained composite particles, different organic solvents [ethyl acetate (EA), propylene carbonate (PC) and acetone (ACE)] were used with a stabilizer [didodecyl dimethyl ammonium bromide (DMAB)]. The particle size of nanoparticles was observed by the dynamic light scattering method. When EA and PC as partially water-soluble solvents were used, small composite nanoparticles below 80nm were obtained, while large composite nanoparticles above 330nm were prepared for ACE as a fully water-soluble solvent.
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